The Sculk Sensor is detecting the player when:
player moves from carpet to wool.
player jumps into a block with carpet above it.
player jumps in the very edge of a wool block.
Related issues
duplicates
Comments
migrated
ampolive
Thank you for your report!
We're tracking this issue in MC-1133, so this ticket is being resolved and linked as a duplicate.
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The last point you have, player jumps in the very edge of a wool block, is happening because of Minecraft's math. If you're on the very edge of one block, you might be on one of the neighbouring blocks. You can see this when you jump on the edge of slime and it's not bouncy.